2220212211021 has 48 divisors (see below), whose sum is σ = 3764841120768. Its totient is φ = 1234183392000.

The previous prime is 2220212211017. The next prime is 2220212211043. The reversal of 2220212211021 is 1201122120222.

It is a happy number.

2220212211021 is a `hidden beast` number, since 2 + 220 + 212 + 211 + 0 + 21 = 666.

It is not a de Polignac number, because 2220212211021 - 2² = 2220212211017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220212210985 and 2220212211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220212211071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13440036 + ... + 13604226.

It is an arithmetic number, because the mean of its divisors is an integer number (78434190016).

Almost surely, 2^{2220212211021} is an apocalyptic number.

2220212211021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2220212211021 is a deficient number, since it is larger than the sum of its proper divisors (1544628909747).

2220212211021 is a wasteful number, since it uses less digits than its factorization.

2220212211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170042 (or 170039 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2220212211021 its reverse (1201122120222), we get a palindrome (3421334331243).

The spelling of 2220212211021 in words is "two trillion, two hundred twenty billion, two hundred twelve million, two hundred eleven thousand, twenty-one".